Fetal heart rate monitoring probe with protective structure
By designing a disposable protective snap-fit structure and an anti-drop device on the fetal heart rate monitoring probe, the problems of manual application of coupling agent and easy probe drop have been solved, achieving the effects of simplified operation, improved efficiency, reduced infection risk and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG PHARMA UNIV
- Filing Date
- 2025-03-10
- Publication Date
- 2026-04-17
AI Technical Summary
Existing fetal heart rate monitoring probes require manual application of coupling agent, which is cumbersome and requires frequent disinfection, affecting work efficiency. Furthermore, the probes are easily dropped and damaged, resulting in a short service life.
A fetal heart rate monitoring probe with a protective structure was designed, including a disposable protective snap-fit structure and a limiting structure. The latex film layer and coupling agent are pre-installed to avoid direct contact with the pregnant woman's skin, and an anti-drop device prevents the probe from falling, simplifying the operation process and reducing the risk of cross-infection.
It enables pre-filling and rapid installation of the coupling agent, simplifies the operation process, improves work efficiency, reduces the risk of cross-infection, extends the probe's service life, ensures effective ultrasound penetration, and improves the accuracy and reliability of fetal heart monitoring.
Smart Images

Figure CN224125973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a fetal heart rate monitoring probe with a protective structure. Background Technology
[0002] Fetal heart rate monitoring utilizes ultrasound waves to penetrate the pregnant woman's abdominal wall and reach the fetal heart. When the reflected echo is received, it is amplified and filtered, converting it into sound or images. With the help of a coupling gel, air between the probe and the skin is eliminated, allowing the ultrasound waves to effectively penetrate the skin and reach the fetal heart, reducing signal attenuation and making the fetal heartbeat clearer. Fetal heart rate monitoring can effectively monitor the fetal heart rate and uterine pressure, indirectly reflecting any signs of fetal distress or placental dysfunction.
[0003] Currently, the use of fetal heart rate monitoring probes requires filling a bottle with coupling agent and manually squeezing it onto the probe before placing it on the abdomen for ultrasound examination. However, this process involves wiping the probe with a tissue for disinfection each time, which is cumbersome and affects work efficiency when there are many pregnant women undergoing fetal monitoring. In addition, the disinfectant cannot directly contact the probe during wiping, as this can easily cause corrosion. However, frequent wiping inevitably leads to contact, which still shortens the probe's lifespan. Currently, a sterile B-ultrasound probe sheath for interventional surgery, patent number CN201620674961.5, is proposed. It involves setting a rubber sleeve on the outside of the fetal heart rate monitoring probe to completely cover it and secure it to prevent the probe from contacting the skin and reduce the number of disinfection cycles. However, the rubber sleeve is relatively difficult to remove later, and completely covering the fetal heart rate monitoring probe makes it difficult for medical staff to grasp and operate it.
[0004] Secondly, the probe used to measure fetal heart rate contains important precision electronic components and acoustic parts. Its smooth surface and limited space make it easy to drop during cleaning, which can lead to loose internal wiring, broken solder joints, and affect signal transmission.
[0005] Therefore, it is necessary to design a fetal heart rate monitoring probe with a protective structure to solve the above problems. Utility Model Content
[0006] This invention provides a fetal heart rate monitoring probe with a protective structure, which solves the aforementioned technical problems.
[0007] To solve the above-mentioned technical problems, this utility model provides a fetal heart rate monitoring probe with a protective structure, including a fetal heart rate monitoring probe body. Side handles are fixed on both sides of the upper part of the fetal heart rate monitoring probe body, and a wiring terminal is fixed on the upper part of the fetal heart rate monitoring probe body. The wiring terminal is electrically connected to an external host. A convenient protection device is sleeved and connected to the lower part of the fetal heart rate monitoring probe body. The convenient protection device includes a disposable protective snap-fit structure and a limiting structure. The limiting structure is sleeved and fixed to the lower part of the fetal heart rate monitoring probe body. The limiting structure covers the bottom of the fetal heart rate monitoring probe body and is snap-fitted to the limiting structure.
[0008] The disposable protective snap-fit structure includes a latex film layer, a connecting ring fixed to the top of the latex film layer, multiple right-angle hooks evenly fixed to the top of the connecting ring, a storage cavity provided at the bottom of the latex film layer, the storage cavity being filled with coupling agent, a rubber ring fixed in the middle of the latex film layer above the coupling agent, a release film layer adhered to the top of the rubber ring, a release film layer also adhered to the bottom of the latex film layer, and a cavity provided between the release film layer and the latex film layer, the cavity also being filled with coupling agent;
[0009] The limiting structure includes a fixed ring and a movable ring. The fixed ring is fixed to the middle of the outer part of the fetal heart rate monitoring probe body. A movable groove is opened at the top of the fixed ring. A slider is fixed at the bottom of the movable ring. The movable ring is slidably connected to the movable groove of the fixed ring through the slider. Both the fixed ring and the movable ring have multiple through grooves.
[0010] Preferably, the connecting ring, the fixed ring, and the movable ring are all provided with notches to engage with the corresponding terminals.
[0011] Preferably, the length of the fixed ring is greater than the length of the movable ring, and the remaining length of the movable groove is equal to the length of the through groove, and the width of the through groove is equal to the width of the top of the right-angle hook.
[0012] Preferably, the slider and the movable groove have an L-shaped cross section.
[0013] Preferably, the side handle is connected to an anti-drop device, which includes a connecting rope wound and adhered to the side handle, the connecting rope being fixedly connected to a Velcro connecting strap, and the other end of the Velcro connecting strap being fixedly connected to a clapping wristband.
[0014] Preferably, the patting bracelet includes a memory metal spring, and the memory metal spring is covered with a silicone layer.
[0015] Preferably, the patting wristband has arched support on both sides when straightened.
[0016] Compared with related technologies, the fetal heart rate monitoring probe with a protective structure provided by this utility model has the following advantages:
[0017] Beneficial effects:
[0018] This invention provides a method to protect the detection end of the fetal heart rate monitoring probe by inserting a disposable protective clip structure into a limiting structure. This allows for pre-installation and rapid installation of the coupling agent, eliminating the need for medical staff to manually apply the coupling agent, greatly simplifying the operation process and improving work efficiency. The fetal heart rate monitoring probe does not directly contact the pregnant woman's skin but is isolated by a latex film layer, effectively reducing the risk of cross-infection and ensuring the health and safety of both the pregnant woman and medical staff. The close fit between the latex film layer and the skin, combined with the use of coupling agent, effectively eliminates air interference, ensuring effective ultrasound penetration and thus improving the accuracy and reliability of fetal heart rate monitoring. Furthermore, the disposable latex film layer ensures hygiene standards for each fetal heart rate monitoring session, reducing the possibility of disease transmission. The quick disassembly and replacement of the disposable protective clip structure avoids cumbersome disinfection steps, saving time and reducing potential corrosion of the fetal heart rate monitoring probe during disinfection, extending the equipment's lifespan.
[0019] This invention provides a disposable protective snap-fit structure that tightly covers the bottom of the fetal heart rate monitoring probe body with its latex film layer, requiring less material and effectively reducing usage costs.
[0020] This invention provides a method for medical staff to wrap a wristband around their wrist during fetal heart rate monitoring. The wristband is connected to the fetal heart rate monitoring probe via Velcro and a connecting cord. This effectively prevents the probe from slipping and falling, protecting the internal precision components from damage. Similarly, when disinfecting and cleaning the fetal heart rate monitoring probe, this method also effectively prevents the risk of the probe slipping and falling, thus improving the protection of the fetal heart rate monitoring probe. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a fetal heart rate monitoring probe with a protective structure according to this utility model;
[0022] Figure 2 This is a schematic diagram of the disposable protective snap-fit structure of this utility model;
[0023] Figure 3 This is a schematic front cross-sectional view of the disposable protective snap-fit structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the limiting structure of this utility model;
[0025] Figure 5 This is an enlarged schematic diagram of point A of this utility model;
[0026] Figure 6 This is a schematic diagram of the cross-section of the fixed ring, connecting ring, and right-angle hook of this utility model;
[0027] Figure 7 This is a schematic diagram of the anti-fall device of this utility model;
[0028] Figure 8 This is a schematic diagram of the patting wristband part of this utility model.
[0029] The diagram is labeled as follows: 1. Fetal heart rate monitoring probe body; 2. Wiring terminal; 3. Side handle; 4. Anti-drop device; 41. Patting wristband; 42. Velcro connecting strap; 43. Connecting rope; 5. Convenient protection device; 51. Disposable protective snap-fit structure; 511. Release film layer; 512. Latex film layer; 513. Connecting ring; 514. Right angle hook; 515. Rubber ring; 516. Coupling agent; 52. Limiting structure; 521. Fixing ring; 5211. Movable groove; 522. Through groove; 523. Movable ring; 5231. Slider. Detailed Implementation
[0030] Example 1, by Figure 1-8 Provided is a fetal heart rate monitoring probe with a protective structure, including a fetal heart rate monitoring probe body 1, side handles 3 fixed on both sides of the upper part of the fetal heart rate monitoring probe body 1, and a wiring terminal 2 fixed on the upper part of the fetal heart rate monitoring probe body 1, which is electrically connected to an external host through the wiring terminal 2. A convenient protection device 5 is sleeved and connected to the lower part of the fetal heart rate monitoring probe body 1. The convenient protection device 5 includes a disposable protective snap-fit structure 51 and a limiting structure 52. The limiting structure 52 is sleeved and fixed to the lower part of the fetal heart rate monitoring probe body 1, and the limiting structure 52 covers the bottom of the fetal heart rate monitoring probe body 1 and is snap-fitted and connected to the limiting structure 52.
[0031] Specifically, before use, the disposable protective clip structure 51 is inserted into the limiting structure 52 to protect the detection end of the fetal heart monitoring probe body 1. During fetal heart monitoring, medical staff do not need to manually apply coupling agent 516 and can contact the pregnant woman's abdomen. The disposable protective clip structure 51 is equipped with coupling agent 516 to expel air and ensure effective penetration of ultrasound. During fetal heart monitoring, medical staff move the fetal heart monitoring probe body and, in combination with the principle of ultrasound, receive and convert the echo signal of the fetal heart in real time, converting it into sound or graphics for analysis.
[0032] In this embodiment, the disposable protective snap-fit structure 51 includes a latex film layer 512, a connecting ring 513 fixed to the top of the latex film layer 512, and multiple right-angle hooks 514 evenly fixed to the top of the connecting ring 513. A storage cavity is provided at the bottom of the latex film layer 512, and the storage cavity is filled with a coupling agent 516. A rubber ring 515 is fixed in the middle of the latex film layer 512 above the coupling agent 516. A release film layer 511 is attached to the top of the rubber ring 515, and a release film layer 511 is also attached to the bottom of the latex film layer 512. A cavity is provided between 11 and the latex film layer 512, and the cavity is also filled with coupling agent 516; the limiting structure 52 includes a fixed ring 521 and a movable ring 523. The fixed ring 521 is fixed to the middle of the outer part of the fetal heart monitoring probe body 1. The top of the fixed ring 521 has a movable groove 5211. The bottom of the movable ring 523 has a slider 5231. The movable ring 523 is slidably connected to the movable groove 5211 of the fixed ring 521 through the slider 5231. Both the fixed ring 521 and the movable ring 523 have multiple through grooves 522.
[0033] Specifically, by grasping the connecting ring 513, the release film layer 511 inside the latex film layer 512 is torn off, exposing the internal coupling agent 516. Then, the latex film layer 512 is slipped onto the bottom of the fetal heart rate monitoring probe body 1 and pulled upward to deform it, so that the fetal heart rate monitoring probe body 1 contacts the coupling agent 516 at the bottom of the latex film layer 512. A rubber ring 515 is then slipped onto the bottom of the fetal heart rate monitoring probe body 1 to limit the coupling agent 516 inside the latex film layer 512, preventing it from being squeezed out onto the upper part of the fetal heart rate monitoring probe body 1. When the connecting ring 513 is pulled upward, multiple right-angle hooks 514 insert... Insert into the corresponding multiple through slots 522; the movable ring 523 initially rotates to the right and fits on the fixed ring 521, the movable ring 523 corresponds to the through slots 522 on the fixed ring 521, so that the upper part of each right-angle hook 514 can pass through to the top of the movable ring 523, then grasp the movable ring 523 and rotate it to the left, driving the slider 5231 to move in the slide groove of the fixed ring 521, the movable ring 523 separates from the through slots 522 on the fixed ring 521, the right-angle hook 514 is locked and limited, and the latex film layer 512 is put into the bottom of the fetal heart monitoring probe body 1 for protection;
[0034] During fetal heart rate monitoring, medical staff do not need to manually apply coupling agent 516. They can directly peel off the release film 511 outside the latex film layer 512, exposing the latex layer coated with coupling agent 516 to contact the pregnant woman's abdomen. During contact, the latex film layer 512 adheres to the skin, and the coupling agent 516 eliminates air, ensuring effective ultrasound penetration. After the test is completed, the movable ring 523 is grasped and rotated to the right. The movable ring 523 aligns with the through groove 522 on the fixed ring 521, releasing the restraint on the right-angle hooks 514. The elastic rebound of the latex film layer 512 causes the multiple right-angle hooks 514 to separate from the fixed ring 521 and the movable ring 523, thus detaching it from the fetal heart rate monitoring probe body 1. The disposable protective clip structure 51 is then discarded and replaced with a new disposable protective clip structure 51. This eliminates the need for cumbersome disinfection steps, improves work efficiency, reduces frequent disinfection, thereby reducing corrosion of the fetal heart rate monitoring probe and extending its service life. At the same time, the fetal heart rate monitoring probe does not directly contact the pregnant woman, reducing the risk of cross-infection.
[0035] Among them, the connecting ring 513, the fixed ring 521 and the movable ring 523 are all provided with notches to be snapped into place with the wiring terminal 2, so as to facilitate the fitting and installation with the lower part of the fetal heart monitoring probe body 1.
[0036] Among them, the length of the fixed ring 521 is greater than the length of the movable ring 523, and the remaining length of the movable groove 5211 is equal to the length of the through groove 522. The width of the through groove 522 is equal to the top width of the right angle hook 514. The cross-sectional width of the movable ring 523 is greater than the remaining width of the movable ring 523 in the through groove 522. Therefore, the rotated movable ring 523 can limit the right angle hook 514.
[0037] The slider 5231 and the movable groove 5211 have L-shaped cross sections, and the movable ring 523 drives the slider 5231 to move in the groove of the fixed ring 521, making it difficult for them to detach.
[0038] In Example 2, based on Example 1, an anti-drop device 4 is connected to the side handle 3. The anti-drop device 4 includes a connecting rope 43 wrapped and glued to the side handle 3. The connecting rope 43 is fixedly connected to a Velcro connecting strap 42, and the other end of the Velcro connecting strap 42 is fixedly connected to a patting wristband 41.
[0039] Specifically, during fetal heart rate monitoring, medical staff can wrap the patting wristband 41 around their wrist and connect it to the fetal heart rate monitoring probe body 1 via Velcro connecting strap 42 and connecting rope 43. This can effectively prevent the probe from slipping and falling, protecting the internal precision components from damage. Similarly, when disinfecting and cleaning the fetal heart rate monitoring probe body 1, it can also effectively prevent the risk of the probe slipping and falling, thus improving the protection of the fetal heart rate monitoring probe body 1.
[0040] The PatPat Bracelet 41 includes a memory metal spring, which is covered with a silicone layer. The PatPat Bracelet 41 provides high comfort when in contact with the wrist through the silicone layer.
[0041] Among them, the Paipai Bracelet 41 has arched support on both sides when straightened, providing a stable grip.
[0042] Working principle:
[0043] Before use, the disposable protective clip structure 51 is inserted into the limiting structure 52 to protect the detection end of the fetal heart rate monitoring probe body 1. That is, by grasping the connecting ring 513, the release film layer 511 inside the latex film layer 512 is torn off to expose the internal coupling agent 516. Then, the latex film layer 512 is inserted into the bottom of the fetal heart rate monitoring probe body 1 and pulled upward to deform it, so that the fetal heart rate monitoring probe body 1 contacts the coupling agent 516 at the bottom of the latex film layer 512. The rubber ring 515 is inserted into the lower part of the fetal heart rate monitoring probe body 1 to limit the coupling agent 516 inside the latex film layer 512 and prevent it from being squeezed out to the upper part of the fetal heart rate monitoring probe body 1. When the connecting ring 513 is pulled upward, multiple right-angle hooks 514 are inserted into the corresponding multiple through grooves 522.
[0044] The movable ring 523 initially rotates to the right and fits onto the fixed ring 521. The movable ring 523 corresponds to the through groove 522 on the fixed ring 521, so that the upper part of each right-angle hook 514 can pass through to the top of the movable ring 523. Then, the movable ring 523 is grasped and rotated to the left, which drives the slider 5231 to move in the slide groove of the fixed ring 521. The movable ring 523 separates from the through groove 522 on the fixed ring 521. The cross-sectional width of the movable ring 523 is greater than the remaining width of the movable ring 523 in the through groove 522. Therefore, the rotated movable ring 523 can lock and limit the right-angle hook 514, and put the latex film layer 512 into the bottom of the fetal heart monitoring probe body 1 for protection.
[0045] During fetal heart monitoring, medical staff do not need to manually apply coupling agent 516. They can directly peel off the release film 511 outside the latex film layer 512, exposing the latex layer coated with coupling agent 516 to contact the pregnant woman's abdomen. When in contact, the latex film layer 512 adheres to the skin, and the coupling agent 516 eliminates air, ensuring effective penetration of ultrasound. During fetal heart monitoring, medical staff move the fetal heart monitoring probe body 1, and in combination with the principle of ultrasound, receive and convert the echo signal of the fetal heart in real time, converting it into sound or graphics for analysis.
[0046] After the test is completed, grasp the movable ring 523 and rotate it to the right. The movable ring 523 corresponds to the through groove 522 on the fixed ring 521, releasing the limit on the right-angle hook 514. Through the elastic rebound of the latex film layer 512, the multiple right-angle hooks 514 separate from the fixed ring 521 and the movable ring 523, thus detaching from the fetal heart monitoring probe body 1. The disposable protective snap-fit structure 51 is then discarded and replaced with a new disposable protective snap-fit structure 51. This eliminates the need for cumbersome disinfection steps, improves work efficiency, reduces frequent disinfection, thereby reducing corrosion of the fetal heart monitoring probe and extending its service life. At the same time, the fetal heart monitoring probe does not come into direct contact with the pregnant woman, reducing the risk of cross-infection.
[0047] The fetal heart rate monitoring probe body 1 is protected by connecting the anti-drop device 4 to the probe body 1. The Velcro connecting strap 42 is threaded onto the side handle 3 of the fetal heart rate monitoring probe and wrapped and secured. The Velcro connecting strap 42 is connected to the wristband 41 via the connecting rope 43. During fetal heart rate monitoring, medical staff can wrap the wristband 41 around their wrist and connect it to the fetal heart rate monitoring probe body 1 via the Velcro connecting strap 42 and the connecting rope 43. This effectively prevents the probe from slipping and falling, protecting the internal precision components from damage. Similarly, when disinfecting and cleaning the fetal heart rate monitoring probe body 1, the risk of the probe slipping and falling is also effectively prevented, thus improving the protection of the fetal heart rate monitoring probe body 1.
Claims
1. A fetal heart rate monitoring probe with a protective structure, comprising a fetal heart rate monitoring probe body (1), wherein side handles (3) are fixed on both sides of the upper part of the fetal heart rate monitoring probe body (1), and a wiring terminal (2) is fixed on the upper part of the fetal heart rate monitoring probe body (1), which is electrically connected to an external host through the wiring terminal (2), characterized in that: The lower part of the fetal heart monitoring probe body (1) is fitted with a convenient protection device (5). The convenient protection device (5) includes a disposable protective snap-fit structure (51) and a limiting structure (52). The limiting structure (52) is fitted and fixed to the lower part of the fetal heart monitoring probe body (1). The limiting structure (52) covers the bottom of the fetal heart monitoring probe body (1) and is snap-fitted to the limiting structure (52). The disposable protective snap-fit structure (51) includes a latex film layer (512), a connecting ring (513) is fixed on the top of the latex film layer (512), a plurality of right-angle hooks (514) are evenly fixed on the top of the connecting ring (513), a storage cavity is provided at the bottom of the latex film layer (512), the storage cavity is filled with coupling agent (516), a rubber ring (515) is fixed in the middle of the latex film layer (512) above the coupling agent (516), a release film layer (511) is pasted on the top of the rubber ring (515), a release film layer (511) is also pasted on the bottom of the latex film layer (512), and a cavity is provided between the release film layer (511) and the latex film layer (512), the cavity is also filled with coupling agent (516); The limiting structure (52) includes a fixed ring (521) and a movable ring (523). The fixed ring (521) is fixed to the middle of the outer part of the fetal heart monitoring probe body (1). The fixed ring (521) has a movable groove (5211) at the top. The movable ring (523) has a slider (5231) fixed at the bottom. The movable ring (523) is slidably connected to the movable groove (5211) of the fixed ring (521) through the slider (5231). Both the fixed ring (521) and the movable ring (523) have multiple through grooves (522).
2. The fetal heart rate monitoring probe with a protective structure according to claim 1, characterized in that, The connecting ring (513), the fixed ring (521) and the movable ring (523) are all provided with notches to be snapped into place with the wiring terminal (2).
3. The fetal heart monitoring probe with a protective structure according to claim 1, wherein, The length of the fixed ring (521) is greater than the length of the movable ring (523), and the remaining length of the movable groove (5211) is equal to the length of the through groove (522). The width of the through groove (522) is equal to the top width of the right angle hook (514).
4. The fetal heart monitor probe with a protective structure of claim 1, wherein, The slider (5231) and the movable groove (5211) have L-shaped cross sections.
5. The fetal heart monitor probe with protective structure of claim 1, wherein, The side handle (3) is connected to an anti-drop device (4), which includes a connecting rope (43) wrapped and glued to the side handle (3). The connecting rope (43) is fixedly connected to a Velcro connecting strap (42), and the other end of the Velcro connecting strap (42) is fixedly connected to a patting wristband (41).
6. The fetal heart monitor probe with a protective structure according to claim 5, wherein, The patting wristband (41) includes a memory metal spring, which is covered with a silicone layer.
7. A fetal heart rate monitoring probe with a protective structure according to claim 5, characterized in that, The patting wristband (41) has arched support on both sides when straightened.
Citation Information
Patent Citations
Intervene operation with aseptic B ultrasonic probe covering membrane
CN205964073U